This is brief but powerful.
http://www.nbra.info/ The political history behind race troubles in America is pretty amazing. But it's the old story of power: divide and conquer. Black vs white, rich vs poor, etc. Of course we've been warned: Ephesians 6:12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.